Slant 6 904 TorqueFlight question

I decline Bill D's apology, since I was 100% wrong. I forgot about the HyperPak. But, sounds like there never was a factory 4 bbl kickdown lever for an automatic tranny. Anyway, just trying to explain to the OP why it isn't trivial to realize the 4 bbl setup, so his mechanic needs to do more research and not lead him down a dead-end.

An important point for the OP is that the kick-down lever didn't change between early cable-shift (often push-button) and later lever-shift transmissions, so going to a newer transmission (and loosing his push-buttons) would not help.